Maybe HR in these banks are not effectively communicating with the potential candidates to muster their interest and long term career development. They should try to sell the job to the candidate and also discuss about the long term career development plans. Candidate also need to feel comfortable with the interviewers, HR should discuss with the direct managers about the candidate profiles at the beginning and get them interested about meeting the candidate. So when both of parties meet they both have expectations from each side, if this goes well....then success. Of course not all meetings are good, then people move to the next job or next candidate.